Chromatography Forum

Posted: **Mon Jan 29, 2018 3:30 am**

Thanks Mattmullaney,
I also share that I used ionpairing method and talked to you 7 days ago. It is not successfull to use it, because tR Met is not tM, so, pic Vildagliptin is not appear.
So...I haven't found a new method.
Thank you very much for your enthusiasm!

Posted: **Mon Jan 29, 2018 3:38 am**

Hi again,

So that I understand, metformin + the ion-pairing agent is now eluting away from the void volume, and Vildagliptin is not eluting at all?

This is horrible luck. I am sorry to hear it.

Will the next move be to HILIC, then?

Posted: **Mon Jan 29, 2018 6:34 am**

Hi Mattmullaney
Thank you for your helping
Because our devices have limited, HILIC method is unabled to do.
I will read more information. so If you have any idea, I hope you will share it to me.
Best & regard!

Posted: **Mon Jan 29, 2018 10:03 am**

Hi Again DIEGC40,

I'll go back to looking for methods...not sure what I'll turn up, but will try.

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